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How many inhabitable planets are there in the universe? Two estimates are given by Drake's Equation...

How many inhabitable planets are there in the universe? Two estimates are given by Drake's Equation and Seager's Equation. Do a little research on Drake's Equation and Seagar's Equation. Summarize what you've found. From a probability standpoint, particularly subjective probability, how do these equation hold up?

Comment and justify your comments particularly in the light of subjective probability.

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